212221100110010 has 16 divisors (see below), whose sum is σ = 381998352194856. Its totient is φ = 84888357378048.

The previous prime is 212221100109959. The next prime is 212221100110027. The reversal of 212221100110010 is 10011001122212.

It can be written as a sum of positive squares in 4 ways, for example, as 156221276320201 + 55999823789809 = 12498851^2 + 7483303^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1045742 + ... + 20628518.

Almost surely, 2^{212221100110010} is an apocalyptic number.

212221100110010 is a deficient number, since it is larger than the sum of its proper divisors (169777252084846).

212221100110010 is a wasteful number, since it uses less digits than its factorization.

212221100110010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20666497.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 212221100110010 its reverse (10011001122212), we get a palindrome (222232101232222).

The spelling of 212221100110010 in words is "two hundred twelve trillion, two hundred twenty-one billion, one hundred million, one hundred ten thousand, ten".